Cosmology Big Bang and the Expanding Universe Richard Lasky – Summer 2010.

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Presentation transcript:

Cosmology Big Bang and the Expanding Universe Richard Lasky – Summer 2010

Cosmology General Relativity serves as the foundation for modern Cosmology Cosmology is the study of the universe as a whole It deals with: – A search to understand: The observed universe Its origin Its future

The Big Bang The idea that the universe had a beginning was first suggested by the general theory of relativity Physicists believe that the universe began as a tiny dense point which expanded outward to produce the vast structure we see today XKM&NR=1

Expanding Universe The galaxies we see in all directions are moving away from the Earth, as evidenced by their red shiftsred shifts The red shift is apparently a Doppler shift and indicates that essentially all of the galaxies are moving away from usDoppler shift Hubble determined that the red shift (recession speed) is proportional to distance yU

Expanding Universe

Standard model of the stages of the universe

Large Hadron Collider at CERN w&feature=related

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